I'm looking foreward to trying out CPM M4 at some point. Wether the Military, a muleteam blade, or a big chopper doesn't matter. I'll get it sometime, one way or another. It is expensive stuff BTW. It costs to buy, to work it, and to heat treat it. It's non stainless also, which doesn't bother me. I don't know if that's a hinderance business wise. There are lots of other steels I'd like to try as well. Joe